Have you tried the free Revo Uninstaller? It gets files the standard uninstall routines leave behind. After running it, the free CCleaner can show you any leftover Registry entries or file folders. CCleaner can also remove them. The free Glary Utilities will also do these things. If you install CCleaner or Glary, just make sure you use them both to disable any startup entries they add—along with any others you don't need running. The entries are safe (they're just checking for updates), but you don't need them running on a DAW.
Once you've thoroughly uninstalled the E-MU software, you can right-click on the audio device in Device Manager and delete it. Be sure to put a check into the box that asks if you want to remove all related driver files. Running CCleaner or Glary Utilities after that will show you if anything is left over from removing the E-MU driver. If there is, you can delete it.
Steve